A robust VaR model under different time periods and weighting schemes

This paper analyses several volatility models by examining their ability to forecast Value-at-Risk (VaR) for two different time periods and two capitalization weighting schemes. Specifically, VaR is calculated for large and small capitalization stocks, based on Dow Jones (DJ) Euro Stoxx indices and is modeled for long and short trading positions by using non parametric, semi parametric and parametric methods. In order to choose one model among the various forecasting methods, a two-stage backtesting procedure is implemented. In the first stage the unconditional coverage test is used to examine the statistical accuracy of the models. In the second stage a loss function is applied to investigate whether the differences between the models, that calculated accurately the VaR, are statistically significant. Under this framework, the combination of a parametric model with the historical simulation produced robust results across the sample periods, market capitalization schemes, trading positions and confidence levels and therefore there is a risk measure that is reliable.

Board Members in the Service Industry: An Empirical Examination of the Relationship Between Corporate Social Responsibility Orientation and Directorial Type

One area of business performance of particular interest to both scholars and practitioners is corporate social responsibility. The notion that organizations should be attentive to the needs of constituents other than shareholders has been investigated and vigorously debated for over two decades. This has provoked an especially rich and diverse literature investigating the relationship between business and society. As a result, researchers have urged the study of the profiles and backgrounds of corporate upper echelons in order to better understand this relationship.There is ample evidence that corporations have in recent years increased the proportion of outside directors on their boards. This has been partly in reaction to increased interest in the corporate social responsiveness of business organizations and suggestions that the board of directors could play a unique role in this area. The expectation on the part of practitioners, researchers, and governmental regulators is that outside directors will advocate greater corporate responsiveness to society's needs by playing a more active role in overseeing managerial decisions.The purpose of this study is to partially fill a void in the literature by determining whether or not these expectations are justified, particularly in the service industry. Data were collected as part of a larger cross-national study of corporate social responsibility. A multivariate analysis of variance (MANOVA) of the results of a survey of 307 board members (198 outside and 109 inside directors) indicates that outside directors exhibit greater concern about the discretionary component of corporate responsibility and a weaker orientation toward economic performance. No significant differences between the two groups were observed with respect to the legal and ethical dimensions of corporate social responsibility. Some explanations as well as limited generalizations and implications are developed.     

The efficiency of Greek public pension fund portfolios

Greek public pension funds can invest up to 23% into risky assets and are not allowed to invest outside Greece. This paper seeks to investigate the costs of investment constraints on pension fund portfolios. In particular we try to quantify the losses that portfolios suffer due to under-diversification and sub-optimal asset allocation. We find that the high concentration of Greek equity portfolios imposes a substantial return and utility loss which is further increased when the lack of international diversification is taken into account. Restricting the weight of equities to 23% of the total portfolio, leads to sub-optimal asset allocation that costs as much as 2% (3%) per annum compared to a balanced domestic (global) benchmark.     

The corporate social responsiveness orientation of board members: Are there differences between inside and outside directors?

Differences and similarities between inside and outside board members with regard to their attitudes toward corporate social responsibility are examined. The results indicate that outside directors exhibit greater concern about the discretionary component of corporate responsibility and a weaker orientation toward economic performance. No significant differences between the two groups were observed with respect to the legal and ethical dimensions of corporate social responsibility. Some explanations as well as limited generalizations and implications are developed.Nabil Ibrahim is the Grover Maxwell Professor of Business Administration at Augusta College, Augusta, Georgia. He teaches courses in Strategic Management and Organizational Behavior. Dr. Ibrahim's articles have appeared in theJournal of Business Ethics, theJournal of Applied Business Research, andHealth Care Management Review as well as various other journals and proceedings.John Angelidis is Assistant Professor of Management at St. John's University, New York, NY. He teaches courses in Strategic Management and International Business. Dr. Angelidis has published articles in theMid-Atlantic Journal of Business, theJournal of Applied Business Research, andBusiness Review, as well as in various other journals and proceedings.     

The Relationship between Religiousness and Corporate Social Responsibility Orientation: Are there Differences Between Business Managers and Students?

The purpose of this paper is to determine whether there is a relationship between a person’s degree of religiousness and corporate social responsibility orientation. A total of 411 managers and 506 students from seven universities were surveyed. The statistical analysis showed that religiousness does influence students’ orientation toward the economic, ethical, and philanthropic responsibilities of business. It does not, however, have a significant impact upon the managers’ attitudes. When the “low religiousness” students and managers were compared, differences were found with respect to the economic, ethical, and philanthropic components of corporate social responsibility. Similar results were obtained when the “high religiousness” students and managers were compared. The implications of these findings are discussed. Nabil Ibrahim is the Grover Maxwell Professor of Business Administration at Augusta State University, Augusta, Georgia. He teaches courses in Strategic Management and Applied Statistics. Dr. Ibrahim’s articles have appeared in the Journal of Business Ethics, Health Care Management Review, the Journal of Applied Business Research, as well as many other journals and proceedings. Donald P. Howard is an Associate Professor of Management at Augusta State University, Augusta, Georgia. He teaches courses in Strategic Management and Entrepreneurship. His articles have appeared in a number of journals such as the Journal of Business Ethics, Journal of Applied Case Research, and Health Care Management Review, as well as many proceedings. John Angelidis is Professor and Chair, Department of Management, St. John’s University, New York, NY. He teaches courses in Strategic Management and International Business. Dr. Angelidis has published articles in the Journal of Business Ethics, Review of Business, Journal of Commerce and Management, as well as many other journals and proceedings.     

The Components of the Bid‐Ask Spread: the Case of the Athens Stock Exchange

We analyse the components of the bid‐ask spread in the Athens Stock Exchange (ASE), which was recently characterised as a developed market. For large and medium capitalisation stocks, we estimate the adverse selection and the order handling component of the spreads as well as the probability of a trade continuation on the same side of either the bid or the ask price, using the Madhavan et al. (1997) model. We extend it by incorporating the traded volume and we find that the adverse selection component exhibits U‐shape patterns, while the cost component pattern depends on the stock price. For high priced stocks, the usual U‐shape applies, while for low‐priced ones, it is an increasing function of time, mainly due to the order handling spread component. Furthermore, the expected price change and the liquidity adjustment to Value‐at‐Risk that is needed are higher in the low capitalisation stocks, while the most liquid stocks are the high priced ones. Moreover, by estimating the Madhavan et al. (1997) model for two distinct periods we explain why there are differences in the components of the bid‐ask spread.     

An Exploratory Study of the Impact of Degree of Religiousness Upon an Individual's Corporate Social Responsiveness Orientation

The recent failures and scandals involving many large businesses have highlighted the importance of corporate social responsibility as a fundamental factor in the soundness of the free market system. The corporate social responsiveness orientation of business executives plays an important role in corporate decision making since managers make important decisions on behalf of their corporations. This paper explores whether there is a relationship between an individual's degree of religiousness and his or her corporate social responsiveness (CSR) orientation. The results of a survey of 473 business students found a significant relationship between degree of religiousness and attitudes toward the economic and ethical components of CSR. Some explanations as well as limited generalizations and implications are developed.     

Practical Implications of Educational Background on Future Corporate Exceutives' Social Responsibility Orientation

Differences between business students atsecular and non-secular universities withregard to their corporate social responsibilityorientation (CSRO) are examined. The resultsshow that the two groups' attitudes toward thefour components of CSRO are significantlydifferent. Specifically, compared to businessstudents in non-secular institutions, thestudents of secular universities exhibitgreater concern about the legal component ofcorporate responsibility and a weakerorientation toward discretionary activities. Nosignificant differences between the two groupswere observed with respect to economicperformance and the ethical dimension.Explanations as well as limited generalizationsand implications are developed.     

Managers’ Attitudes Toward Codes of Ethics: Are There Gender Differences?

As the need for more diversity in business ethics is becoming more pressing in our global world, we provide an historical study of a Fair Trade (FT) movement, born in rural Mexico. We first focus on the basic assumptions of its founders, which include a worker–priest, Frans van der Hoff, a group of native Indians and local farmers who formed a cooperative, and an NGO, Max Havelaar. We then review both the originalities and challenges of the FT movement and its potential contributions to the current theories and practices in business ethics.     

Revisiting mutual fund performance evaluation

Mutual fund manager excess performance should be measured relative to their self-reported benchmark rather than the return of a passive portfolio with the same risk characteristics. Ignoring the self-reported benchmark results in different measurement of stock selection and timing components of excess performance. We revisit baseline empirical evidence fund performance evaluation utilizing stock selection and timing measures that incorporate the self-reported benchmark. We introduce a new factor exposure based approach for measuring the – static and dynamic – timing capabilities of mutual fund managers. We overall conclude that current studies are likely to be misstating skill because they ignore the managers’ self-reported benchmark in the performance evaluation process.